Journal
ORGANIC ELECTRONICS
Volume 15, Issue 2, Pages 405-413Publisher
ELSEVIER
DOI: 10.1016/j.orgel.2013.11.034
Keywords
Small molecule; Solution-processed; High open-circuit voltage; Organic solar cells; Benzo[1,2-b:4,5-b '] dithiophene; Benzotriazole
Funding
- National Natural Science Foundation of China [21274134, 51173199]
- Ministry of Science and Technology of China [2010DFA52310]
- New Century Excellent Talents in University [NCET-11-0473]
- Department of Science and Technology of Shandong Province [2010GGC10345]
- Qingdao Municipal Science and Technology Program [13-1-4-200-jch, 11-2-4-22-hz]
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A novel deep HOMO A(1)-pi-A(2)-D-A(2)-pi-A(1) type molecule (D(CATBTzT)BDT), which terminal electron-withdrawing octyl cyanoacetate group is connected to a benzo[1,2-b:4,5-b'] dithiophene (BDT) core through another electron-accepting benzotriazole block, has been synthesized, characterized, and employed as electron donor material for small molecule organic solar cells (SM-OSCs). By simple solution spin-coating fabrication process, D(CATBTzT) BDT/PC61BM based OSCs exhibit a power conversion efficiency (PCE) of 3.61% with a high open-circuit voltage of 0.93 V. The D(CATBTzT) BDT based solar cells device also can show high FF of 72% with PCEs of 2.31% which is one of the best FF results for solution-processed SM-OSCs. (C) 2013 Elsevier B.V. All rights reserved.
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